Lite salt for electrolytes?

I've read recently that some lite salts (like Morton's brand) are good for electrolyte replenishment. Is this true, or is it just salty hype? If so, do you recommend it as opposed to other products like Liquid IV or MTN Ops? If I have, say, a 40 oz. bottle, how much salt should I add? And finally, how often can you safely do this? Thanks for any insight y'all can provide. Have a good day!